Martin-Gay, K. Elayn Prealgebra / Elayn Martin-Gay. - 6th ed. - Boston, MA. : Pearson Prentice Hall, c2011. - 1 v, 756p. : ill. Includes index. ISBN: 9780321640086 Subjects--Topical Terms: Arithmetic -- Textbooks. LC Class. No.: QA 107.2 MAR 2011